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<a href="async__adapter__snd_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow-IPC: Core</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &quot;<a class="code" href="detail_2transport__fwd_8hpp.html">ipc/transport/detail/transport_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &quot;<a class="code" href="ipc__core_2src_2ipc_2transport_2error_8hpp.html">ipc/transport/error.hpp</a>&quot;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="preprocessor">#include &quot;<a class="code" href="asio__waitable__native__hndl_8hpp.html">ipc/util/sync_io/asio_waitable_native_hndl.hpp</a>&quot;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="preprocessor">#include &lt;flow/log/log.hpp&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="preprocessor">#include &lt;flow/async/single_thread_task_loop.hpp&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceipc_1_1transport_1_1sync__io.html">ipc::transport::sync_io</a></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>{</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment">// Types.</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"></span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment">/**</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment"> * Internal-use type that adapts a given PEER-state sync_io::Native_handle_sender or sync_io::Blob_sender *core* into</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment"> * the async-I/O-pattern Native_handle_sender or Blob_sender.  State-mutating logic of the latter is forwarded</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment"> * to a `*this`; while trivial `const` (in PEER state) things like `.send_blob_max_size()` are forwarded directly to the</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment"> * core `sync_io::X`.</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment"> *</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="comment"> * @see transport::Native_socket_stream::Impl uses this for 99% of its outgoing-direction</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="comment"> *      (PEER-state by definition) logic.</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="comment"> * @see transport::Blob_stream_mq_sender_impl uses this for 99% of its logic.</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="comment"> *</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="comment"> * @see Async_adapter_receiver for the opposite-direction thing.  E.g., transport::Native_socket_stream::Impl</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="comment"> *      uses that for 99% of its incoming-direction logic.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="comment"> *</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment"> * ### Threads and thread nomenclature; locking ###</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment"> * Thread U, thread W... locking... just see those sections in transport::Native_socket_stream::Impl class doc header.</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * We adopt that nomenclature and logic.  However, as we are concerned with only one direction (op-type),</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment"> * we only deal with code in either thread U or W concerned with that.  The other-direction code -- if applicable</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"> * (e.g., applicable for `Native_socket_stream` which deals with both over 1 socket connection; N/A</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"> * for `Blob_stream_mq_*` which uses separate objects entirely) -- simply co-exists in the same thread W and &quot;thread&quot;</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"> * U.  (If `Native_socket_stream` wanted to, it could even parallelize stuff in thread W by using separate worker</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment"> * threads Ws and Wr.  As of this writing it does not, but it could -- nothing in `*this` would change.)</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment"> *</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment"> * Note, again, that we have our own `m_mutex`.  If there is an opposing-direction counterpart Async_adapter_receiver,</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment"> * then it has its own `m_mutex`; hence things can proceed concurrently.</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment"> *</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment"> * ### Impl design ###</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment"> * This is almost entirely subsumed by our `sync_io` core, Async_adapter_sender::Core, an instance of</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment"> * sync_io::Native_handle_sender or sync_io::Blob_sender.  It has a send op-type (possibly among others), so we invoke</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment"> * its `&quot;sync_io::*_sender:start_send_blob_ops()&quot;` during our initialization.  After that:</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment"> *</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment"> * The main method, send_native_handle() (and its degenerate version send_blob())</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment"> * lacks a completion handler and hence can be forwarded to `Core m_sync_io`... that&#39;s it.  auto_ping() -- same deal.</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment"> *</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment"> * async_end_sending() takes a completion handler, however.  Simple enough -- we could just capture</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment"> * this `on_done_func` (from the user arg) in a lambda, then when `m_sync_io` calls our internal handler</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment"> * (synchronously), we `post(on_done_func)` onto thread W, and that&#39;s it.  However, that&#39;s not sufficient,</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment"> * as if they call our dtor before that can complete, then we are to invoke `on_done_func(E)` where E =</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment"> * operation-aborted (by our contract).  So we save `on_done_func` into `m_end_sending_on_done_func_or_empty`</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment"> * instead of capturing it.</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment"> */</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html">   73</a></span><span class="keyword">class </span><a class="code hl_class" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html">Async_adapter_sender</a> :</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  <span class="keyword">public</span> flow::log::Log_context,</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  <span class="keyword">private</span> boost::noncopyable</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>{</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="comment"></span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment">  /// The `sync_io::X` type being adapted into async-I/O-pattern `X`.</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">   81</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">Core</a> = Core_t;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment"></span> </div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment">   * Constructs the adapter around `sync_io::X` object `*sync_io`.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">   *</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="comment">   * @param logger_ptr</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment">   *        Logger to use for logging subsequently.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">   * @param log_pfx</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment">   *        String that shall precede ~all logged messages (e.g., `lexical_cast&lt;string&gt;(x)`, where `x` is an `X`.)</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment">   * @param worker</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="comment">   *        The worker thread loop of `X`.  Background work, as needed, will be posted onto this</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment">   *        &quot;thread W.&quot;  Note that `X` may (or may not) share this thread with unrelated tasks;</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="comment">   *        for example `Native_socket_stream` uses it for both a `*this` (outgoing-direction)</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="comment">   *        and an Async_adapter_receiver (incoming-direction).  `*worker* must already be `-&gt;start()`ed.</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="comment">   * @param sync_io</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="comment">   *        The core object of `X`.  It should have just (irreversibly) entered state PEER.</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment">   */</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>  <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#adef138fbf95db65f984f9e9670a2ed59">Async_adapter_sender</a>(flow::log::Logger* logger_ptr, <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> log_pfx,</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>                       flow::async::Single_thread_task_loop* worker, <a class="code hl_typedef" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">Core</a>* sync_io);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment"></span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="comment">   * To be invoked after `-&gt;stop()`ping `*worker` (from ctor), as well as flushing any still-queued</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment">   * tasks in its `Task_engine` (via `.restart()` and `.poll()`), this satisfies the customer adapter</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">   * dtor&#39;s contract which is to invoke any not-yet-fired completion handlers with special</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">   * operation-aborted error code.  In our case that is either nothing or 1 `async_end_sending()` completion</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">   * handler.  If applicable the dtor returns once that handler has completed in an unspecified thread</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">   * that is not the calling thread.</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">   */</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>  <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a01e5d7e07bd3258ea822c4ad79a7e2d6">~Async_adapter_sender</a>();</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span> </div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment"></span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="comment">   * See Native_handle_sender counterpart.  However, this one is `void`, as there is no way `*this` is not in PEER state</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="comment">   * (by definition).</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment">   *</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="comment">   * @param hndl_or_null</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span><span class="comment">   *        See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment">   * @param meta_blob</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment">   *        See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment">   * @param err_code</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">   *        See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">   */</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a0483d9166a8d19bae7746ae8acc7721c">send_native_handle</a>(<a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a> hndl_or_null, <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae0be7edba7e30ffa3f8b742af621f2ab">util::Blob_const</a>&amp; meta_blob, <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code);</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment"></span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span><span class="comment">   * See Blob_sender counterpart.  However, this one is `void`, as there is no way `*this` is not in PEER state</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><span class="comment">   * (by definition).</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span><span class="comment">   *</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">   * @param blob</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="comment">   *        See Blob_sender counterpart.</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span><span class="comment">   * @param err_code</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">   *        See Blob_sender counterpart.</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="comment">   */</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a6a198ded3921acd7293f3dc7fdfdc3f5">send_blob</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae0be7edba7e30ffa3f8b742af621f2ab">util::Blob_const</a>&amp; blob, <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code);</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span><span class="comment"></span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">   * See Native_handle_sender counterpart; or leave `on_done_func_or_empty.empty()` for</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">   * Native_handle_sender::end_sending().</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">   *</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="comment">   * @param on_done_func_or_empty</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">   *        See Native_handle_sender counterpart.  See above.</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">   * @return See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">   */</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a61f6229bcef05a266c63d36ab2bd4df0">async_end_sending</a>(flow::async::Task_asio_err&amp;&amp; on_done_func_or_empty);</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="comment"></span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span><span class="comment">   * See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span><span class="comment">   *</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="comment">   * @param period</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="comment">   *        See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span><span class="comment">   * @return See Native_handle_sender counterpart.</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment">   */</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa74da44fd22c3517149dfc8250ed3183">auto_ping</a>(<a class="code hl_typedef" href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">util::Fine_duration</a> period);</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment"></span> </div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">   * Handles the completion of `m_sync_io.async_end_sending()` operation whether synchronously or asynchronously.</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">   * Can be invoked from thread U or thread W, and #m_mutex must be locked.  #m_end_sending_on_done_func_or_empty</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="comment">   * must not be `.empty()`.  Post-condition: it has been made `.empty()`, and a `move()`d version of it has</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span><span class="comment">   * posted onto thread W.</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span><span class="comment">   *</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span><span class="comment">   * @param err_code</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span><span class="comment">   *        Result to pass to user.</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment">   */</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a49c641453f4b8eb4a2893677c1a83ab2">on_sync_io_end_sending_done</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code);</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>  <span class="comment">// Data.</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span><span class="comment"></span> </div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="comment">  /// See `log_pfx` arg of ctor.</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa6e0c8421b44bc49fff0c7cab706d18d">  175</a></span><span class="comment"></span>  <span class="keyword">const</span> std::string <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa6e0c8421b44bc49fff0c7cab706d18d">m_log_pfx</a>;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span><span class="comment"></span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span><span class="comment">   * The `on_done_func` argument to async_end_sending(), possibly `.empty()` if originally user invoked `end_sending()`,</span></div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span><span class="comment">   * or if neither was used, or if it has fired.  Note that if async_end_sending() does not complete</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span><span class="comment">   * before dtor executes, dtor will invoke the handler (unless `.empty()`) with operation-aborted code.</span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="comment">   *</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span><span class="comment">   * It would not need to be a member -- could just be captured in lambdas while async_end_sending() is outstanding --</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span><span class="comment">   * except for the need to still invoke it with operation-aborted from dtor in the aforementioned case.</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span><span class="comment">   *</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span><span class="comment">   * Protected by #m_mutex.</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span><span class="comment">   */</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a20463c8aca5f365e57ec53a193bebd6f">  187</a></span>  flow::async::Task_asio_err <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a20463c8aca5f365e57ec53a193bebd6f">m_end_sending_on_done_func_or_empty</a>;</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span><span class="comment"></span> </div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">   * Protects #m_end_sending_on_done_func_or_empty and, more importantly, send-ops data of #m_sync_io.</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span><span class="comment">   * For example `send_*()` engages `Core::send_*()` in thread U which might</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span><span class="comment">   * add messages to its internal pending-out-messages-during-would-block queue; while</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span><span class="comment">   * a util::sync_io::Event_wait_func `on_active_ev_func()` invocation (on writable transport) as requested by</span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span><span class="comment">   * #m_sync_io will invoke logic inside the latter, which might pop items from that queue</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span><span class="comment">   * and send them off -- all in thread W.  (This information is provided for context, as formally it&#39;s a black</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span><span class="comment">   * box inside `m_sync_io`.)</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span><span class="comment">   */</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a801d13765438ce9f2963cf59981cd7c0">  198</a></span>  <span class="keyword">mutable</span> flow::util::Mutex_non_recursive <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a801d13765438ce9f2963cf59981cd7c0">m_mutex</a>;</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="comment"></span> </div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span><span class="comment">  /// Single-thread worker pool for all internal async work.  Referred to as thread W in comments.</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a98cf53ba1f6abee1c3d3a4dd7533232d">  201</a></span><span class="comment"></span>  flow::async::Single_thread_task_loop&amp; <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a98cf53ba1f6abee1c3d3a4dd7533232d">m_worker</a>;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><span class="comment"></span> </div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span><span class="comment">   * The core #Core engine, implementing the `sync_io` pattern (see util::sync_io doc header).</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span><span class="comment">   * See our class doc header for overview of how we use it (the aforementioned `sync_io` doc header talks about</span></div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span><span class="comment">   * the `sync_io` pattern generally).</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span><span class="comment">   *</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="comment">   * Thus, #m_sync_io is the synchronous engine that we use to perform our work in our asynchronous boost.asio</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span><span class="comment">   * loop running in thread W (#m_worker) while collaborating with user thread(s) a/k/a thread U.</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span><span class="comment">   * (Recall that the user may choose to set up their own event loop/thread(s) --</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="comment">   * boost.asio-based or otherwise -- and use their own equivalent of an #m_sync_io instead.)</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span><span class="comment">   */</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a9bc681f5ac954b2ce9e1c62545c6796f">  213</a></span>  <a class="code hl_typedef" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">Core</a>&amp; <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a9bc681f5ac954b2ce9e1c62545c6796f">m_sync_io</a>;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>}; <span class="comment">// class Async_adapter_sender</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span> </div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span><span class="comment">// Template implementations.</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#adef138fbf95db65f984f9e9670a2ed59">  219</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#adef138fbf95db65f984f9e9670a2ed59">Async_adapter_sender&lt;Core_t&gt;::Async_adapter_sender</a>(flow::log::Logger* logger_ptr,</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>                                                   <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> log_pfx,</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>                                                   flow::async::Single_thread_task_loop* worker,</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>                                                   <a class="code hl_typedef" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">Core</a>* sync_io) :</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>  flow::log::Log_context(logger_ptr, <a class="code hl_enumeration" href="namespaceipc.html#a4ccdeed058222c635745a4dc830e99f7">Log_component</a>::S_TRANSPORT),</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  m_log_pfx(log_pfx),</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  m_worker(*worker),</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>  m_sync_io(*sync_io)</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span>{</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">util::sync_io::Asio_waitable_native_handle</a>;</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">util::sync_io::Task_ptr</a>;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span> </div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>  <span class="comment">// We&#39;ve just entered PEER state, so set up the send-ops.</span></div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>  <span class="comment">/* Hook up the m_sync_io=&gt;*this interaction.  m_sync_io will use these callbacks to ask</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">   * us to -&gt;async_wait() on `Asio_waitable_native_handle`s for it.</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">   *</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">   * The *this=&gt;m_sync_io interaction shall be our APIs, like send_blob(),</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">   * simply invoking the same API in m_sync_io (m_sync_io.send_blob() for that example). */</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span> </div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>  <span class="comment">/* (.start_send_native_handler_ops() would do the same thing, if it exists.  If it exists, that&#39;s because it has</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span><span class="comment">   * both to satisfy two concepts -- for when the user uses the sync_io::X directly -- but we don&#39;t care about that;</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment">   * we know they are the same in this case; so just use the one we know exists for any X.) */</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="preprocessor">#ifndef NDEBUG</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok =</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a9bc681f5ac954b2ce9e1c62545c6796f">m_sync_io</a>.start_send_blob_ops([<span class="keyword">this</span>](Asio_waitable_native_handle* hndl_of_interest,</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>                                       <span class="keywordtype">bool</span> ev_of_interest_snd_else_rcv,</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>                                       <a class="code hl_typedef" href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">Task_ptr</a>&amp;&amp; on_active_ev_func)</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>  {</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>    <span class="comment">/* We are in thread U or thread W; m_sync_io.&lt;?&gt;() has called its m_..._ev_wait_func();</span></div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span><span class="comment">     * it has protected access to *hndl_of_interest as needed. */</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>    FLOW_LOG_TRACE(<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa6e0c8421b44bc49fff0c7cab706d18d">m_log_pfx</a> &lt;&lt; <span class="stringliteral">&quot;: Sync-IO send-ops event-wait request: &quot;</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>                   <span class="stringliteral">&quot;descriptor [&quot;</span> &lt;&lt; hndl_of_interest-&gt;native_handle() &lt;&lt; <span class="stringliteral">&quot;], &quot;</span></div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>                   <span class="stringliteral">&quot;writable-else-readable [&quot;</span> &lt;&lt; ev_of_interest_snd_else_rcv &lt;&lt; <span class="stringliteral">&quot;].&quot;</span>);</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>    <span class="comment">// They want this async_wait().  Oblige.</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>    assert(hndl_of_interest);</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>    hndl_of_interest-&gt;async_wait(ev_of_interest_snd_else_rcv</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>                                   ? Asio_waitable_native_handle::Base::wait_write</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>                                   : Asio_waitable_native_handle::Base::wait_read,</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>                                 [<span class="keyword">this</span>, on_active_ev_func = std::move(on_active_ev_func)]</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>                                   (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code)</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>    {</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>      <span class="comment">// We are in thread W.  Nothing is locked.</span></div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span> </div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>      <span class="keywordflow">if</span> (err_code == boost::asio::error::operation_aborted)</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>      {</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>        <span class="keywordflow">return</span>; <span class="comment">// Stuff is shutting down.  GTFO.</span></div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>      }</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>      <span class="comment">// else</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span> </div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>      <span class="comment">// They want to know about completed async_wait().  Oblige.</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span> </div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>      <span class="comment">// Protect m_sync_io and m_* against send-ops (`send_*()`, *end_sending(), ...).</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>      Lock_guard&lt;<span class="keyword">decltype</span>(<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a801d13765438ce9f2963cf59981cd7c0">m_mutex</a>)&gt; lock(<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a801d13765438ce9f2963cf59981cd7c0">m_mutex</a>);</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span> </div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>      <span class="comment">/* Inform m_sync_io of the event.  This can synchronously invoke handler we have registered via m_sync_io</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span><span class="comment">       * API (e.g., `send_*()`, auto_ping()).  In our case -- if indeed it triggers a handler -- it will</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span><span class="comment">       * have to do with async_end_sending() completion. */</span></div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span> </div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>      (*on_active_ev_func)();</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>      <span class="comment">// (That would have logged sufficiently inside m_sync_io; let&#39;s not spam further.)</span></div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>      <span class="comment">// Lock_guard&lt;decltype(m_mutex)&gt; lock(m_mutex): unlocks here.</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>    }); <span class="comment">// hndl_of_interest-&gt;async_wait()</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>  }); <span class="comment">// m_sync_io.start_send_blob_ops()</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span>  assert(ok);</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>} <span class="comment">// Async_adapter_sender::Async_adapter_sender()</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span> </div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a01e5d7e07bd3258ea822c4ad79a7e2d6">  292</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a01e5d7e07bd3258ea822c4ad79a7e2d6">Async_adapter_sender&lt;Core_t&gt;::~Async_adapter_sender</a>()</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>{</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>  <span class="keyword">using </span>flow::async::Single_thread_task_loop;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>  <span class="keyword">using </span>flow::async::reset_thread_pinning;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>  <span class="keyword">using </span>flow::util::ostream_op_string;</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span> </div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>  <span class="comment">/* Pre-condition: m_worker is stop()ed, and any pending tasks on it have been executed.</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">   * Our promised job is to invoke any pending handlers with operation-aborted.</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span><span class="comment">   * The decision to do it from a one-off thread is explained in transport::Native_socket_stream::Impl::~Impl()</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span><span class="comment">   * and used in a few places; so see that.  Let&#39;s just do it.</span></div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span><span class="comment">   * @todo It would be cool, I guess, to do it all in one one-off thread instead of potentially starting, like,</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span><span class="comment">   * 2 for some of our customers.  Well, whatever.  At least we can avoid it if we know there are no handlers</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span><span class="comment">   * to invoke; speaking of which there&#39;s just the one: */</span></div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span> </div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>  <span class="keywordflow">if</span> (!m_end_sending_on_done_func_or_empty.empty())</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>  {</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>    Single_thread_task_loop one_thread(get_logger(),</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>                                       ostream_op_string(<span class="stringliteral">&quot;ASdDeinit-&quot;</span>, m_log_pfx));</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>    one_thread.start([&amp;]()</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>    {</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>      reset_thread_pinning(get_logger()); <span class="comment">// Don&#39;t inherit any strange core-affinity.  Float free.</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span> </div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>      FLOW_LOG_INFO(m_log_pfx &lt;&lt; <span class="stringliteral">&quot;: In transient snd-finisher thread: &quot;</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>                    <span class="stringliteral">&quot;Shall run pending graceful-sends-close completion handler.&quot;</span>);</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>      m_end_sending_on_done_func_or_empty(<a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297afe29343445a7bf167cc186a44bd2c6ed">error::Code::S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</a>);</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>      FLOW_LOG_INFO(<span class="stringliteral">&quot;Transient finisher exiting.&quot;</span>);</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>    });</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span>  } <span class="comment">// if (!m_end_sending_on_done_func_or_empty.empty())</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>} <span class="comment">// Async_adapter_sender::~Async_adapter_sender()</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span> </div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a6a198ded3921acd7293f3dc7fdfdc3f5">  323</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a6a198ded3921acd7293f3dc7fdfdc3f5">Async_adapter_sender&lt;Core_t&gt;::send_blob</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae0be7edba7e30ffa3f8b742af621f2ab">util::Blob_const</a>&amp; blob, <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code)</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>{</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span> </div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>  <span class="comment">// We are in thread U (or thread W in a completion handler, but not concurrently).</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span> </div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>  <span class="comment">/* See comments in send_native_handle(); we are just a somewhat degraded version of that.</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span><span class="comment">   * It&#39;s just that send_native_handle() might not even compile, if m_sync_io does not have that method.</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span><span class="comment">   * Logic, as pertains to us, is the same though. */</span></div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span>  Lock_guard&lt;<span class="keyword">decltype</span>(m_mutex)&gt; lock(m_mutex);</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span><span class="preprocessor">#ifndef NDEBUG</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok =</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span>  m_sync_io.send_blob(blob, err_code);</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>  assert(ok &amp;&amp; <span class="stringliteral">&quot;We are by definition in PEER state, and ctor starts send-ops; so that should never &quot;</span></div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>                 <span class="stringliteral">&quot;return false.  Bug somewhere?&quot;</span>);</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>}</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span> </div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a0483d9166a8d19bae7746ae8acc7721c">  342</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a0483d9166a8d19bae7746ae8acc7721c">Async_adapter_sender&lt;Core_t&gt;::send_native_handle</a>(<a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a> hndl, <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae0be7edba7e30ffa3f8b742af621f2ab">util::Blob_const</a>&amp; meta_blob,</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>                                                      <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code)</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>{</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span> </div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span>  <span class="comment">// We are in thread U (or thread W in a completion handler, but not concurrently).</span></div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span> </div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>  <span class="comment">/* This one is particularly simple, as there is no async completion handler to invoke.  So we essentially just</span></div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span><span class="comment">   * forward it to m_sync_io.send_native_handler() with identical signature.  The only subtlety -- and it is</span></div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span><span class="comment">   * quite important -- is that we must lock m_mutex.  That might seem odd if one does not remember that</span></div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span><span class="comment">   * m_sync_io send-ops explicit API (.send_native_handler() in this case) must never be invoked concurrently</span></div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span><span class="comment">   * with the start_send_*_ops()-passed Event_wait_func&#39;s `on_active_ev_func()` -- which might call</span></div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span><span class="comment">   * on_sync_io_end_sending_done().  So we lock it, and elsewhere we lock it when calling on_active_ev_func().</span></div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span><span class="comment">   *</span></div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span><span class="comment">   * Specifically (though formally speaking we are just following the sync_io pattern, and technically the following</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span><span class="comment">   * info is about inside the black box that is m_sync_io), m_sync_io at least stores an out-queue of messages</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span><span class="comment">   * to send, non-empty in would-block conditions; send_native_handle() pushes items onto that queue, while</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span><span class="comment">   * on_active_ev_func() (on writable socket) pops items off it upon successfully sending them off over socket. */</span></div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span> </div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>  Lock_guard&lt;<span class="keyword">decltype</span>(m_mutex)&gt; lock(m_mutex);</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span><span class="preprocessor">#ifndef NDEBUG</span></div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok =</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span>  m_sync_io.send_native_handle(hndl, meta_blob, err_code);</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>  assert(ok &amp;&amp; <span class="stringliteral">&quot;We are by definition in PEER state, and ctor starts send-ops; so that should never &quot;</span></div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span>                 <span class="stringliteral">&quot;return false.  Bug somewhere?&quot;</span>);</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>} <span class="comment">// Async_adapter_sender::send_native_handle()</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span> </div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a61f6229bcef05a266c63d36ab2bd4df0">  371</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a61f6229bcef05a266c63d36ab2bd4df0">Async_adapter_sender&lt;Core_t&gt;::async_end_sending</a>(flow::async::Task_asio_err&amp;&amp; on_done_func_or_empty)</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>{</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span> </div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  <span class="comment">// We are in thread U (or thread W in a completion handler, but not concurrently).</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span> </div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>  <span class="comment">/* While the same comments about locking m_mutex apply, in addition to that:</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span><span class="comment">   * This is somewhat more complex than the other send-ops, as there is a completion handler. */</span></div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span> </div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>  Lock_guard&lt;<span class="keyword">decltype</span>(m_mutex)&gt; lock(m_mutex);</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span> </div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>  <span class="keywordflow">if</span> (on_done_func_or_empty.empty())</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>  {</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>    <span class="keywordflow">return</span> m_sync_io.end_sending();</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>  }</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span> </div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>  <span class="keywordflow">if</span> (!m_end_sending_on_done_func_or_empty.empty())</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>  {</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>    FLOW_LOG_WARNING(m_log_pfx &lt;&lt; <span class="stringliteral">&quot;: async_end_sending(F) invoked; but we have a saved &quot;</span></div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span>                     <span class="stringliteral">&quot;completion handler -- which has not yet fired -- for it already, so it must be a dupe-call.  &quot;</span></div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>                     <span class="stringliteral">&quot;Ignoring.&quot;</span>);</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>  }</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>  <span class="comment">/* else: It might also be .empty() and still be a dupe call (if it has fired already -- then they called us again).</span></div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span><span class="comment">   *       m_sync_io.async_end_sending() will catch that fine.  For now though: */</span></div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span> </div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>  <span class="comment">/* Save it (instead of capturing it in lambda) in case dtor runs before async-end-sending completes;</span></div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span><span class="comment">   * it would then invoke it with operation-aborted code. */</span></div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>  m_end_sending_on_done_func_or_empty = std::move(on_done_func_or_empty);</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span> </div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span>  <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a> sync_err_code;</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok = m_sync_io.async_end_sending(&amp;sync_err_code, [<span class="keyword">this</span>](<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code)</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>  {</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>    <span class="comment">/* We are in thread W.  m_mutex is locked (by the handler inside the function inside ctor).</span></div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span><span class="comment">     * This&#39;ll, inside, post the handler onto thread W. */</span></div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span>    on_sync_io_end_sending_done(err_code);</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>  });</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span> </div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span>  <span class="keywordflow">if</span> (!ok)</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>  {</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>    <span class="comment">// False start (dupe call).  It logged enough.</span></div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>    m_end_sending_on_done_func_or_empty.clear();</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span>  }</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>  <span class="comment">// else: It either finished synchronously; or it will finish asynchronously.</span></div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span> </div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span>  <span class="keywordflow">if</span> (sync_err_code == <a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">error::Code::S_SYNC_IO_WOULD_BLOCK</a>)</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span>  {</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span>    <span class="comment">// Async-wait needed before we can complete.  Live to fight another day.</span></div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span>    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>  }</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>  <span class="comment">/* else: Completed synchronously.  Since there can be no async-end-sending chains, it&#39;s no big deal</span></div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span><span class="comment">   * to just use on_sync_io_end_sending_done() again. */</span></div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span> </div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span>  FLOW_LOG_INFO(m_log_pfx &lt;&lt; <span class="stringliteral">&quot;: Sync-IO async-end-sending completed immediately.  &quot;</span></div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>                <span class="stringliteral">&quot;Posting handler onto async-worker thread.&quot;</span>);</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span> </div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>  on_sync_io_end_sending_done(sync_err_code);</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span> </div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span>  <span class="comment">// Lock_guard&lt;decltype(m_mutex)&gt; lock(m_mutex): unlocks here.</span></div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>} <span class="comment">// Async_adapter_sender::async_end_sending()</span></div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span> </div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a49c641453f4b8eb4a2893677c1a83ab2">  436</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a49c641453f4b8eb4a2893677c1a83ab2">Async_adapter_sender&lt;Core_t&gt;::on_sync_io_end_sending_done</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code)</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span>{</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span> </div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span>  <span class="comment">/* We are in thread U or W.  m_mutex is locked (as required for m_end_sending_on_done_func_or_empty</span></div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span><span class="comment">   * and m_sync_io access). */</span></div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span> </div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span>  assert(err_code != boost::asio::error::operation_aborted);</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span> </div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span>  FLOW_LOG_TRACE(m_log_pfx &lt;&lt; <span class="stringliteral">&quot;:: Earlier async-wait =&gt; event active =&gt; snd-mutex lock =&gt; &quot;</span></div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>                 <span class="stringliteral">&quot;on-active-event-func =&gt; sync_io module =&gt; here (on-end-sending-done handler).  Or else &quot;</span></div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>                 <span class="stringliteral">&quot;snd-mutex lock =&gt; no async-wait needed =&gt; here... (ditto).&quot;</span>);</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span> </div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span>  <span class="comment">/* Just invoke user completion handler.  post() it onto thread W.  Why post() onto W?</span></div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span><span class="comment">   * - If we are in thread U: It is plainly required, as we promised to invoke completion handlers</span></div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span><span class="comment">   *   from unspecified thread that isn&#39;t U.</span></div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span><span class="comment">   * - If we are in thread W: To avoid recursive mayhem if they choose to call some other API</span></div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span><span class="comment">   *   inside on_done_func(), we queue it onto thread W by itself. */</span></div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>  m_worker.post([<span class="keyword">this</span>, err_code, on_done_func = std::move(m_end_sending_on_done_func_or_empty)]()</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>  {</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span>    <span class="comment">// We are in thread W.  Nothing is locked.</span></div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span>    FLOW_LOG_TRACE(m_log_pfx &lt;&lt; <span class="stringliteral">&quot;: Invoking on-end-sending-done handler.&quot;</span>);</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>    on_done_func(err_code);</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>    FLOW_LOG_TRACE(<span class="stringliteral">&quot;Handler completed.&quot;</span>);</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>  });</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span> </div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>  m_end_sending_on_done_func_or_empty.clear(); <span class="comment">// Just in case move() didn&#39;t do it.</span></div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>} <span class="comment">// Async_adapter_sender::on_sync_io_end_sending_done()</span></div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span> </div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Core_t&gt;</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa74da44fd22c3517149dfc8250ed3183">  466</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa74da44fd22c3517149dfc8250ed3183">Async_adapter_sender&lt;Core_t&gt;::auto_ping</a>(<a class="code hl_typedef" href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">util::Fine_duration</a> period)</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>{</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>  <span class="keyword">using </span>flow::util::Lock_guard;</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span> </div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>  <span class="comment">// Like send_native_handle() and others (keeping comments light).</span></div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span> </div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>  Lock_guard&lt;<span class="keyword">decltype</span>(m_mutex)&gt; lock(m_mutex);</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span>  <span class="keywordflow">return</span> m_sync_io.auto_ping(period);</div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span>}</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span> </div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>} <span class="comment">// namespace ipc::transport::sync_io</span></div>
<div class="ttc" id="aasio__waitable__native__hndl_8hpp_html"><div class="ttname"><a href="asio__waitable__native__hndl_8hpp.html">asio_waitable_native_hndl.hpp</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html">ipc::transport::sync_io::Async_adapter_sender</a></div><div class="ttdoc">Internal-use type that adapts a given PEER-state sync_io::Native_handle_sender or sync_io::Blob_sende...</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00073">async_adapter_snd.hpp:76</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a01e5d7e07bd3258ea822c4ad79a7e2d6"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a01e5d7e07bd3258ea822c4ad79a7e2d6">ipc::transport::sync_io::Async_adapter_sender::~Async_adapter_sender</a></div><div class="ttdeci">~Async_adapter_sender()</div><div class="ttdoc">To be invoked after -&gt;stop()ping *worker (from ctor), as well as flushing any still-queued tasks in i...</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00292">async_adapter_snd.hpp:292</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a0483d9166a8d19bae7746ae8acc7721c"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a0483d9166a8d19bae7746ae8acc7721c">ipc::transport::sync_io::Async_adapter_sender::send_native_handle</a></div><div class="ttdeci">void send_native_handle(Native_handle hndl_or_null, const util::Blob_const &amp;meta_blob, Error_code *err_code)</div><div class="ttdoc">See Native_handle_sender counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00342">async_adapter_snd.hpp:342</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a20463c8aca5f365e57ec53a193bebd6f"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a20463c8aca5f365e57ec53a193bebd6f">ipc::transport::sync_io::Async_adapter_sender::m_end_sending_on_done_func_or_empty</a></div><div class="ttdeci">flow::async::Task_asio_err m_end_sending_on_done_func_or_empty</div><div class="ttdoc">The on_done_func argument to async_end_sending(), possibly .empty() if originally user invoked end_se...</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00187">async_adapter_snd.hpp:187</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a4675c9691ca920d6e39586d8a5731c32"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a4675c9691ca920d6e39586d8a5731c32">ipc::transport::sync_io::Async_adapter_sender::Core</a></div><div class="ttdeci">Core_t Core</div><div class="ttdoc">The sync_io::X type being adapted into async-I/O-pattern X.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00081">async_adapter_snd.hpp:81</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a49c641453f4b8eb4a2893677c1a83ab2"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a49c641453f4b8eb4a2893677c1a83ab2">ipc::transport::sync_io::Async_adapter_sender::on_sync_io_end_sending_done</a></div><div class="ttdeci">void on_sync_io_end_sending_done(const Error_code &amp;err_code)</div><div class="ttdoc">Handles the completion of m_sync_io.async_end_sending() operation whether synchronously or asynchrono...</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00436">async_adapter_snd.hpp:436</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a61f6229bcef05a266c63d36ab2bd4df0"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a61f6229bcef05a266c63d36ab2bd4df0">ipc::transport::sync_io::Async_adapter_sender::async_end_sending</a></div><div class="ttdeci">bool async_end_sending(flow::async::Task_asio_err &amp;&amp;on_done_func_or_empty)</div><div class="ttdoc">See Native_handle_sender counterpart; or leave on_done_func_or_empty.empty() for Native_handle_sender...</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00371">async_adapter_snd.hpp:371</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a6a198ded3921acd7293f3dc7fdfdc3f5"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a6a198ded3921acd7293f3dc7fdfdc3f5">ipc::transport::sync_io::Async_adapter_sender::send_blob</a></div><div class="ttdeci">void send_blob(const util::Blob_const &amp;blob, Error_code *err_code)</div><div class="ttdoc">See Blob_sender counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00323">async_adapter_snd.hpp:323</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a801d13765438ce9f2963cf59981cd7c0"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a801d13765438ce9f2963cf59981cd7c0">ipc::transport::sync_io::Async_adapter_sender::m_mutex</a></div><div class="ttdeci">flow::util::Mutex_non_recursive m_mutex</div><div class="ttdoc">Protects m_end_sending_on_done_func_or_empty and, more importantly, send-ops data of m_sync_io.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00198">async_adapter_snd.hpp:198</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a98cf53ba1f6abee1c3d3a4dd7533232d"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a98cf53ba1f6abee1c3d3a4dd7533232d">ipc::transport::sync_io::Async_adapter_sender::m_worker</a></div><div class="ttdeci">flow::async::Single_thread_task_loop &amp; m_worker</div><div class="ttdoc">Single-thread worker pool for all internal async work. Referred to as thread W in comments.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00201">async_adapter_snd.hpp:201</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_a9bc681f5ac954b2ce9e1c62545c6796f"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#a9bc681f5ac954b2ce9e1c62545c6796f">ipc::transport::sync_io::Async_adapter_sender::m_sync_io</a></div><div class="ttdeci">Core &amp; m_sync_io</div><div class="ttdoc">The core Core engine, implementing the sync_io pattern (see util::sync_io doc header).</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00213">async_adapter_snd.hpp:213</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_aa6e0c8421b44bc49fff0c7cab706d18d"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa6e0c8421b44bc49fff0c7cab706d18d">ipc::transport::sync_io::Async_adapter_sender::m_log_pfx</a></div><div class="ttdeci">const std::string m_log_pfx</div><div class="ttdoc">See log_pfx arg of ctor.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00175">async_adapter_snd.hpp:175</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_aa74da44fd22c3517149dfc8250ed3183"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#aa74da44fd22c3517149dfc8250ed3183">ipc::transport::sync_io::Async_adapter_sender::auto_ping</a></div><div class="ttdeci">bool auto_ping(util::Fine_duration period)</div><div class="ttdoc">See Native_handle_sender counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00466">async_adapter_snd.hpp:466</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Async__adapter__sender_html_adef138fbf95db65f984f9e9670a2ed59"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Async__adapter__sender.html#adef138fbf95db65f984f9e9670a2ed59">ipc::transport::sync_io::Async_adapter_sender::Async_adapter_sender</a></div><div class="ttdeci">Async_adapter_sender(flow::log::Logger *logger_ptr, util::String_view log_pfx, flow::async::Single_thread_task_loop *worker, Core *sync_io)</div><div class="ttdoc">Constructs the adapter around sync_io::X object *sync_io.</div><div class="ttdef"><b>Definition:</b> <a href="async__adapter__snd_8hpp_source.html#l00219">async_adapter_snd.hpp:219</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle_html"><div class="ttname"><a href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">ipc::util::sync_io::Asio_waitable_native_handle</a></div><div class="ttdoc">Useful if using the sync_io pattern within a user event loop built on boost.asio (optionally with flo...</div><div class="ttdef"><b>Definition:</b> <a href="asio__waitable__native__hndl_8hpp_source.html#l00080">asio_waitable_native_hndl.hpp:81</a></div></div>
<div class="ttc" id="adetail_2transport__fwd_8hpp_html"><div class="ttname"><a href="detail_2transport__fwd_8hpp.html">transport_fwd.hpp</a></div></div>
<div class="ttc" id="aipc__core_2src_2ipc_2transport_2error_8hpp_html"><div class="ttname"><a href="ipc__core_2src_2ipc_2transport_2error_8hpp.html">error.hpp</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1error_html_adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24"><div class="ttname"><a href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">ipc::transport::error::Code::S_SYNC_IO_WOULD_BLOCK</a></div><div class="ttdeci">@ S_SYNC_IO_WOULD_BLOCK</div><div class="ttdoc">A sync_io operation could not immediately complete; it will complete contingent on active async-wait ...</div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1error_html_adfef15ef4e76cc55d652fbd9c2797297afe29343445a7bf167cc186a44bd2c6ed"><div class="ttname"><a href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297afe29343445a7bf167cc186a44bd2c6ed">ipc::transport::error::Code::S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</a></div><div class="ttdeci">@ S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</div><div class="ttdoc">Async completion handler is being called prematurely, because underlying object is shutting down,...</div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1sync__io_html"><div class="ttname"><a href="namespaceipc_1_1transport_1_1sync__io.html">ipc::transport::sync_io</a></div><div class="ttdoc">sync_io-pattern counterparts to async-I/O-pattern object types in parent namespace ipc::transport.</div><div class="ttdef"><b>Definition:</b> <a href="detail_2transport__fwd_8hpp_source.html#l00069">transport_fwd.hpp:70</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_1_1sync__io_html_ac6973c71fc70c6d867b0f2255c642532"><div class="ttname"><a href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">ipc::util::sync_io::Task_ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; Task &gt; Task_ptr</div><div class="ttdoc">Short-hand for ref-counted pointer to a Function&lt;&gt; that takes no arguments and returns nothing; in pa...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io__fwd_8hpp_source.html#l00585">sync_io_fwd.hpp:585</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ac66141280c3b7295a86b65209f31cc58"><div class="ttname"><a href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">ipc::util::Fine_duration</a></div><div class="ttdeci">flow::Fine_duration Fine_duration</div><div class="ttdoc">Short-hand for Flow's Fine_duration.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00117">util_fwd.hpp:117</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ae0be7edba7e30ffa3f8b742af621f2ab"><div class="ttname"><a href="namespaceipc_1_1util.html#ae0be7edba7e30ffa3f8b742af621f2ab">ipc::util::Blob_const</a></div><div class="ttdeci">boost::asio::const_buffer Blob_const</div><div class="ttdoc">Short-hand for an immutable blob somewhere in memory, stored as exactly a void const * and a size_t.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00134">util_fwd.hpp:134</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ae6ac47812a90d1287c61e0b7de7bc4f5"><div class="ttname"><a href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">ipc::util::String_view</a></div><div class="ttdeci">flow::util::String_view String_view</div><div class="ttdoc">Short-hand for Flow's String_view.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00115">util_fwd.hpp:115</a></div></div>
<div class="ttc" id="anamespaceipc_html_a4ccdeed058222c635745a4dc830e99f7"><div class="ttname"><a href="namespaceipc.html#a4ccdeed058222c635745a4dc830e99f7">ipc::Log_component</a></div><div class="ttdeci">Log_component</div><div class="ttdoc">The flow::log::Component payload enumeration containing various log components used by Flow-IPC inter...</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00322">common.hpp:323</a></div></div>
<div class="ttc" id="anamespaceipc_html_aa3192e586cc45d3e7c22463bf2760f89"><div class="ttname"><a href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">ipc::Error_code</a></div><div class="ttdeci">flow::Error_code Error_code</div><div class="ttdoc">Short-hand for flow::Error_code which is very common.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00298">common.hpp:298</a></div></div>
<div class="ttc" id="astructipc_1_1util_1_1Native__handle_html"><div class="ttname"><a href="structipc_1_1util_1_1Native__handle.html">ipc::util::Native_handle</a></div><div class="ttdoc">A monolayer-thin wrapper around a native handle, a/k/a descriptor a/k/a FD.</div><div class="ttdef"><b>Definition:</b> <a href="native__handle_8hpp_source.html#l00062">native_handle.hpp:63</a></div></div>
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